Rivastigmine exposure provided by a transdermal patch versus capsules.

  • Mercier F
  • Lefèvre G
  • Huang H
 et al. 
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OBJECTIVES: The rivastigmine transdermal patch is the first transdermal treatment for Alzheimer's disease (AD) and dementia associated with Parkinson's disease. The objective of this study was to evaluate the pharmacokinetics of rivastigmine following transdermal delivery by a patch versus oral delivery with conventional capsules in a population of AD patients. METHODS: Both non-compartmental and compartmental analyses were performed on the same database showing relatively large inter-patient variations in pharmacokinetic parameters (up to 73% for the capsule group). The compartmental analysis provided model-based predictions of pharmacokinetic parameters, with the aim of comparing the two modes of administration when adjusting for confounding factors such as patient body weight and gender. RESULTS: According to both non-compartmental and compartmental analyses, the patch provided significantly lower peak rivastigmine plasma concentrations (C(max)) and slower times to C(max) (t(max)), compared with capsules. However, drug exposure (area under the curve; AUC) was not significantly different between the 4.6 mg/24 hour (5 cm(2)) patch and 3 mg BID (6 mg/day) capsule doses, or between the 9.5 mg/24 hour (10 cm(2)) patch and 6 mg BID (12 mg/day) capsule doses, according to both analyses. This suggests comparable exposure from these two rivastigmine delivery systems. CONCLUSION: The analyses were consistent with previous reports of a markedly less fluctuating, more continuous drug delivery with the rivastigmine patch. This characteristic delivery profile is associated with similar efficacy yet improved tolerability, compared with capsules.

Author-supplied keywords

  • alzheimer
  • patch
  • pharmacokinetics
  • rivastigmine
  • s disease
  • transdermal

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  • François Mercier

  • Gilbert Lefèvre

  • Hsun-Lun Aaron Huang

  • Heinz Schmidli

  • Billy Amzal

  • Silke Appel-Dingemanse

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